[Code of Federal Regulations]

[Title 40, Volume 28]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 40CFR418.17]



[Page 342-343]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 418_FERTILIZER MANUFACTURING POINT SOURCE CATEGORY--Table of Contents

 

                     Subpart A_Phosphate Subcategory

 

Sec.  418.17  Effluent limitations quidelines representing the degree of 

effluent reduction attainable by the application of the best conventional 

pollutant control technology.



    The following limitations establish the quantity or quality of 

pollutants or pollutant properties which may be discharged by a point 

source subject to the provisions of this subpart after application of 

the best conventional pollutant control technology:

    (a) Subject to the provision of paragraphs (b) and (c) of this 

section, the following limitations establish the quantity or quality of 

pollutants or pollutant properties, controlled by this section, which 

may be discharged by a point source subject to the provisions of this 

subpart after application of the best conventional pollutant control 

technology: There shall be no discharge of process wastewater pollutants 

to navigable waters.

    (b) Process wastewater pollutants from a calcium sulfate storage 

pile runoff facility operated separately or in combination with a water 

recirculation system designed, constructed and operated to maintain a 

surge capacity equal to the runoff from the 25-year, 24-hour rainfall 

event may be discharged, after treatment to the standards set forth in 

paragraph (c) of this section, whenever chronic or catastrophic 

precipitation events cause the water level to rise into the surge 

capacity. Process wastewater must be treated and discharged whenever the 

water level equals or exceeds the midpoint of the surge capacity.

    (c) The concentration of pollutants discharged in process wastewater 

pursuant to the limitations of paragraph (b) of this section shall not 

exceed the values listed in the following table:



[[Page 343]]







------------------------------------------------------------------------

                                             Effluent limitations (mg/l)

                                           -----------------------------

                                                        Average of daily

          Effluent characteristic             Maximum     values for 30

                                             for any 1  consecutive days

                                                day         shall not

                                                            exceed--

------------------------------------------------------------------------

TSS.......................................         150                50

------------------------------------------------------------------------





The total suspended solid limitations set forth in this paragraph shall 

be waived for process wastewater from a calcium sulfate sulfate storage 

pile runoff facility, operated separately or in combination with a water 

recirculation system, which is chemically treated and then clarified or 

settled to meet the other pollutant limitations set forth in this Sec.  

418.13 (c).



[44 FR 50742, Aug. 29, 1979; 45 FR 37199, June 2, 1980, as amended at 51 

FR 24999, July 9, 1986]